Floral stem cells: from dynamic balance towards termination

Biochem Soc Trans. 2010 Apr;38(2):613-6. doi: 10.1042/BST0380613.

Abstract

During early flower development in Arabidopsis, floral stem cells proliferate and produce a sufficient amount of cells that are recruited for organogenesis. However, after the central organ primordia initiate, stem cell activity in the floral meristem is terminated to ensure the differentiation of a fixed number of floral organs. Underlying this process, the genetic programme regulating the fate of floral meristems undergoes a shift from a spatially balanced signalling scheme for stem cell maintenance to a temporally controlled transcriptional scheme for stem cell termination. Precise timing of stem cell termination is a key issue for flower development, which is secured by the orchestration of multiple regulators in transcriptional and epigenetic regulation.

Publication types

  • Review

MeSH terms

  • AGAMOUS Protein, Arabidopsis / genetics
  • AGAMOUS Protein, Arabidopsis / metabolism
  • AGAMOUS Protein, Arabidopsis / physiology
  • Arabidopsis / genetics
  • Arabidopsis / physiology
  • Arabidopsis Proteins / genetics
  • Arabidopsis Proteins / metabolism
  • Arabidopsis Proteins / physiology
  • Carrier Proteins / genetics
  • Carrier Proteins / metabolism
  • Carrier Proteins / physiology
  • Cell Differentiation / genetics
  • Cell Differentiation / physiology*
  • Cell Proliferation*
  • Flowers / cytology*
  • Flowers / genetics
  • Flowers / physiology
  • Gene Expression Regulation, Developmental / physiology
  • Gene Expression Regulation, Plant
  • Homeodomain Proteins / genetics
  • Homeodomain Proteins / metabolism
  • Homeodomain Proteins / physiology
  • Meristem / genetics
  • Meristem / metabolism
  • Meristem / physiology
  • Models, Biological
  • Protein Serine-Threonine Kinases
  • Receptor Protein-Tyrosine Kinases / genetics
  • Receptor Protein-Tyrosine Kinases / metabolism
  • Receptor Protein-Tyrosine Kinases / physiology
  • Stem Cells / metabolism
  • Stem Cells / physiology*

Substances

  • AGAMOUS Protein, Arabidopsis
  • Arabidopsis Proteins
  • Carrier Proteins
  • Homeodomain Proteins
  • WUSCHEL protein, Arabidopsis
  • knuckles protein, Arabidopsis
  • Receptor Protein-Tyrosine Kinases
  • CLV1 protein, Arabidopsis
  • Protein Serine-Threonine Kinases